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Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($)
$ in Thousands
Total
Common Stock
Additional Paid-in Capital
Accumulated Other Comprehensive Income (Loss)
Retained Earnings
Outstanding shares, beginning balance (in shares) at Jul. 31, 2020   235,315,337      
Stockholders' equity, beginning balance at Jul. 31, 2020 $ 2,489,516 $ 24 $ 672,727 $ (121,088) $ 1,937,853
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Net income 200,285       200,285
Currency translation adjustment (7,406)     (7,406)  
Exercise of stock options, net of repurchased shares (in shares)   802,670      
Exercise of stock options, net of repurchased shares 19,525   20,014   (489)
Stock-based compensation 8,913   8,913    
Outstanding shares, ending balance (in shares) at Oct. 31, 2020   236,118,007      
Stockholders' equity, ending balance at Oct. 31, 2020 2,710,833 $ 24 701,654 (128,494) 2,137,649
Outstanding shares, beginning balance (in shares) at Jul. 31, 2021   237,014,273      
Stockholders' equity, beginning balance at Jul. 31, 2021 3,529,201 $ 24 761,834 (100,860) 2,868,203
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Net income 260,363       260,363
Currency translation adjustment $ (10,518)     (10,518)  
Exercise of stock options, net of repurchased shares (in shares) 146,000 145,986      
Exercise of stock options, net of repurchased shares $ 5,323   5,572   (249)
Stock-based compensation (in shares)   21,091      
Stock-based compensation 9,452   9,452    
Outstanding shares, ending balance (in shares) at Oct. 31, 2021   237,181,350      
Stockholders' equity, ending balance at Oct. 31, 2021 $ 3,793,821 $ 24 $ 776,858 $ (111,378) $ 3,128,317